Pinpoint Test Ag: DTC B1113/B111B

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When taking measurements at Dual Climate Controlled Seat Module (DCSM) harness connectors, do not insert the electrical probes into the female connector pins. Inserting the probes into connector pins can cause intermittent or open electrical connections after reassembly resulting in Diagnostic Trouble Codes (DTCs) and system failure. Touching the tip of these connector pins is recommended instead.

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

AG1 CHECK THE TED CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
Disconnect: Passenger Seat Side Air Bag C327.
Disconnect: DCSM C3036a.

WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.

Connect the battery ground cable. Refer to BATTERY, MOUNTING AND CABLES .

Measure the resistance between the following DCSM C3036a pins, harness side and ground.

CONNECTOR PIN AND CIRCUIT REFERENCE CHART

Connector-Pin	Circuit
C3036a-A	CHS07 (GY/BU)
C3036a-B	RHS07 (BU)
C3036a-C	CHS06 (BU/BN)
C3036a-D	RHS06 (WH)

Are the resistances greater than 10,000 ohms?

Yes: GO to AG2 .
No: If the resistances of C3036a-A and/or C3036a-B to ground were not greater than 10,000 ohms to ground, GO to AG6.
If resistances of C3036a-C and/or C3036a-D to ground were not greater than 10,000 ohms to ground, GO to AG7.

AG2 CHECK THE TED CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure the voltage between the following DCSM C3036a pins, harness side and ground.

CONNECTOR PIN AND CIRCUIT REFERENCE CHART

Connector-Pin	Circuit
C3036a-A	CHS07 (GY/BU)
C3036a-B	RHS07 (BU)
C3036a-C	CHS06 (BU/BN)
C3036a-D	RHS06 (WH)

Is voltage present on any circuits?

Yes: If voltage is present at C3036a-A and/or C3036a-B, GO to AG8.
If voltage is present at C3036a-C and/or C3036a-D, GO to AG9.
No: GO to AG3 .

AG3 CHECK THE TED RESISTANCE
- Ignition OFF.
  NOTE: Make sure the Thermo-Electric Devices (TEDs) are at room temperature and there is no air blowing across the TEDs . Do not handle a TED when measuring resistance. These conditions can cause incorrect readings and lead to incorrect identification of components that are not faulty.
  - Measure the resistance between:
    - DCSM C3036a-A, circuit CHS07 (GY/BU), harness side and DCSM C3036a-B, circuit RHS07 (BU), harness side.
    - DCSM C3036a-C, circuit CHS06 (BU/BN), harness side and C3036a-D, circuit RHS06 (WH), harness side and ground.
      
      Fig 1: Measuring Resistance Between DCSM C3036a-A, Circuit CHS07 (GY/BU) And DCSM C3036a-B, Circuit RHS07 (BU)
      Courtesy of FORD MOTOR CO.
  - Are the resistances between 0.9 and 10 ohms?
  - Yes: INSTALL a new DCSM . REFER to DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) . REPEAT the self-test. CLEAR the DTCs.
    DISCONNECT the battery ground cable.
    
    CONNECT passenger seat side air bag module C327.
    
    REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
  - No: If the resistance between DCSM C3036a-A and C3036a-B was not between 0.9 and 10 ohms, GO to AG5.
    If the resistance between DCSM C3036a-C and C3036a-D was not between 0.9 and 10 ohms, GO to AG4 .
- AG4 CHECK THE RESISTANCE OF THE BACKREST TED
  - Disconnect: Backrest TED C3326.
  - Measure the resistance between backrest TED C3326 pin 1 and pin 3, component side.
    
    Fig 2: Measuring Resistance Between Backrest TED C3322 Pin 1 And Pin 3, Component Side
    Courtesy of FORD MOTOR CO.
  - Is the resistance between 0.9 and 10 ohms?
  - Yes: REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.
    DISCONNECT the battery ground cable.
    
    CONNECT passenger seat side air bag module C327.
    
    REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
  - No: INSTALL a new backrest TED . REFER to SEAT BACKREST THERMO-ELECTRIC DEVICE . REPEAT the self-test. CLEAR the DTCs.
    DISCONNECT the battery ground cable.
    
    CONNECT passenger seat side air bag module C327.
    
    REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- AG5 CHECK THE RESISTANCE OF THE CUSHION TED
  - Disconnect: Cushion TED C3328.
  - Measure the resistance between cushion TED C3328 pin 1 and pin 3, component side.
    
    Fig 3: Measuring Resistance Between Backrest TED C3322 Pin 1 And Pin 3, Component Side
    Courtesy of FORD MOTOR CO.
  - Is the resistance between 0.9 and 10 ohms?
  - Yes: REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.
    DISCONNECT the battery ground cable.
    
    CONNECT passenger seat side air bag module C327.
    
    REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
  - No: INSTALL a new cushion TED . REFER to SEAT CUSHION THERMO-ELECTRIC DEVICE . REPEAT the self-test. CLEAR the DTCs.
    DISCONNECT the battery ground cable.
    
    CONNECT passenger seat side air bag module C327.
    
    REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- AG6 CHECK THE CUSHION TED CIRCUITS FOR A SHORT TO GROUND
  - Disconnect: Cushion TED C3328.
  - Measure the resistance between:
    - DCSM C3036a-A, circuit CHS07 (GY/BU), harness side and ground.
    - DCSM C3036a-B, circuit RHS07 (BU), harness side and ground.
      
      Fig 4: Measuring Resistance Between DCSM C3036a-A, Circuit CHS07 (GY/BU), Harness Side And Ground
      Courtesy of FORD MOTOR CO.
  - Are the resistances greater than 10,000 ohms?
  - Yes: INSTALL a new cushion TED . REFER to SEAT CUSHION THERMO-ELECTRIC DEVICE . REPEAT the self-test. CLEAR the DTCs.
    DISCONNECT the battery ground cable.
    
    CONNECT passenger seat side air bag module C327.
    
    REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
  - No: REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.
    DISCONNECT the battery ground cable.
    
    CONNECT passenger seat side air bag module C327.
    
    REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- AG7 CHECK THE BACKREST TED CIRCUITS FOR A SHORT TO GROUND
- Disconnect: Backrest TED C3326.
- Measure the resistance between:
  - DCSM C3036a-C, circuit CHS06 (BU/BN), harness side and ground.
  - DCSM C3036a-D, circuit RHS06 (WH), harness side and ground.
    
    Fig 5: Measuring Resistance Between DCSM C3036a-C, Circuit CHS06 (BU/BN), Harness Side And Ground
    Courtesy of FORD MOTOR CO.
- Are the resistances greater than 10,000 ohms?
- Yes: INSTALL a new backrest TED . REFER to SEAT BACKREST THERMO-ELECTRIC DEVICE . REPEAT the self-test. CLEAR the DTCs.
  DISCONNECT the battery ground cable.
  
  CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- No: REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.
  DISCONNECT the battery ground cable.
  
  CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
AG8 CHECK THE CUSHION TED CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Cushion TED C3328.
- Ignition ON.
- Measure the voltage between:
  - DCSM C3036a-A, circuit CHS07 (GY/BU), harness side and ground.
  - DCSM C3036a-B, circuit RHS07 (BU), harness side and ground.
    
    Fig 6: Measuring Voltage Between DCSM C3036a-A, Circuit CHS07 (GY/BU), Harness Side And Ground
    Courtesy of FORD MOTOR CO.
- Is voltage present on either circuit?
- Yes: REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.
  DISCONNECT the battery ground cable.
  
  CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- No: INSTALL a new cushion TED . REFER to SEAT CUSHION THERMO-ELECTRIC DEVICE . REPEAT the self-test. CLEAR the DTCs.
  DISCONNECT the battery ground cable.
  
  CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
AG9 CHECK THE BACKREST TED CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Backrest TED C3326.
- Ignition ON.
- Measure the voltage between:
  - DCSM C3036a-C, circuit CHS06 (BU/BN), harness side and ground.
  - DCSM C3036a-D, circuit RHS06 (WH), harness side and ground.
    
    Fig 7: Measuring Voltage Between DCSM C3036a-C, Circuit CHS06 (BU/BN), Harness Side And Ground
    Courtesy of FORD MOTOR CO.
- Is voltage present on either circuit?
- Yes: REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.
  DISCONNECT the battery ground cable.
  
  CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- No: INSTALL a new backrest TED . REFER to SEAT BACKREST THERMO-ELECTRIC DEVICE . REPEAT the self-test. CLEAR the DTCs.
  DISCONNECT the battery ground cable.
  
  CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .